Calculating machines



Feb. 2, 1960 N. R. FRIEBERG ETA!- 2,923,394

CALCULATING MACHINES l9 Sheets-Sheet 1 Original Filed Feb. 24, 1954 li llll INVENTORS NELSON R. FRIEBERG 8 OSCAR F. LARSEN BY M %71 41 THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ETAL CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheet 2 NELSON R. FRIEBERG a OSCAR F-. LARSEN C THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ET L 2, 23,394

CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheet 3 fiikmmmm i lllllllll u 4 g Rs b y 8 i g 8 z;

THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ETAL 2,923,394

CALCULATING MACHINES l9 Sheets-Sheet 4 Original Filed Feb. 24, 1954 INVENTORS NELSON R. FRIEBERG 8 OSCAR F. LARSEN THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ET AL CALCULATING MACHINES l9 Sheets-Sheet 5 Original Filed Feb. 24, 1954 Ill/[ ll I II I 8 OSCAR F LARSEN THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ETAL 2,923,394

CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheet 6 INVENTORS NELSON R. FRIEBERG a OSCAR F. LARSEN THEIR ATTORN EYS Feb. 2, 1960 FRlEBERG ETAL 2,923,394

CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheet 7 FIG.7

INVENTORS NELSON R. FRIEBERG a OSCAR F. LARSEN THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ETAL 2,923,394

CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheet 9 INVENTORS NELSON R. FRIEBERG BY 8 OSCikR; kgm

THEIR ATTORNEYS Y Feb. 2, 1960 N. R. FRIEBERG ETAL 2,923,394

CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheei 1o Q a 12 v 4 \T 1 I 51o z iNvENToRs NELSON R. FRIEBERG 8| OSCAR F. LARSEN THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG L 2,923,394

CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheet ll INVENTORS NELSON R. FRIEB ERG 8 OSCAR F. LARSEN THEIR ATTORN EYS Feb. 2, 1960 N. R. FRIEBERG ET L 2, 2 ,394

CALCULATING MACHINES 19 Sheets-Sheet 12 Original Filed Feb. 24, 1954 NTORS LARSEN 6 f l R. a OSCAR 'F.

THEIR ATTORNEYS N m u Feb. 2, 1960 N. R. FRIEBERG ETAL 2,923,394

CALCULATING MACHINES 19 Sheets-Sheet 13 Original Filed Feb. 24, 1954 INVENTORS NELSON R. FRIEBERG 8| OSCAR F. LARSEN THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ETAL 2,923,394

CALCULATING MACHINES Original Filed Feb. 24, i954 l9 Sheets-Sheet 14 INVENTQRS NELSON R. FRIEBERG a OSCAR F. LARSEN WWW THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ETA!- 2,923,394

CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheet 15 FIG. 22

INVENTORS NELSON R. FRIEBERG a OSCAR F. LARSEN BY m 4X /g a THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ETAL 2,923,394

CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheet 16 mvzu'rons NELSON R. FRIEBERG a OSCAR F. LARSEN THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ETAL 2,923,394

CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheet 17 FIG. 28

INVENTORS NELSON R. FRIEBERG 8: OSCAR F. LARSEN THEIR ATTORNEYS Feb. 2, 1960 N. R. FRIEBERG ET AL 2,923,394

CALCULATING MACHINES 19 Sheets-Sheet 18 Original Filed Feb. 24, 1954 27 TOTAL NELSON R IEBERG & OSCAR ARSEN THEIR ATTORNEYS Feb. 2, 1960 FRIEBERG ETAL 2,923,394

- CALCULATING MACHINES Original Filed Feb. 24, 1954 19 Sheets-Sheet 19 FIG. 32

see 657 332 U 2a ms =2 h DATE- DISENGAGE CARRIAGE RETURN CLUTCH NON ADD EENGAGE GARRTAGE RETURN CLUTCH NON PRINT NON ADD LOWER TOTALlZER SUBTRAOT J p INVENTORS NELSON R. FRIEBERG a OSCAR F. LARSEN THEIR ATTORNEYS United States Patent CALCULATING MACHINES Nelson R. Frieberg and Oscar F. Larsen, Ithaca, N.Y., assignors to The National Cash Register Company, Dayton, Ohio, a corporation of Maryland Original application February 24, 1954, Serial No. 412,302, now Patent No. 2,813,611, dated November 19, 1957. Divided and this application January 22, 1957, Serial No. 635,311

2 Claims. (Cl. 197-66) This invention relates to a power-operated calculating machine of the type adapted for bookkeeping operations wherein debit and credit transactions are printed on one or more record sheets inserted in an automatic return cross tabulating and vertical feed paper carriage. The paper carriage is of the type having a platen around which a journal sheet may be wrapped by being inserted from the rear, and is equipped with a front-feed construction, which may be opened to receive ledger and customers record sheets from the front, to cooperate with the journal sheet and be printed simultaneously therewith by manifold transfer means.

This is a division of the application for United States Letters Patent, Serial No. 412,302, filed February 24, 1954, by the present applicants, now Patent No. 2,813,- 611, issued on November 19, 1957.

The basic construction of the machine is an add-subtract adding machine having two totalizers, automatic credit balance mechanism, automatic true positive or negative total-taking mechanism, and printing mechnism for printing entries and totals. The entries made into the machine either additively or subtractively are entered into both totalizers, but the totals are taken from either one or the other of the totalizers.

The machine is equipped wih automatic cross-tabulating mechanism and with automatic mechanism controlled from the moving carriage to variously cause an amount set up on the keyboard to be entered into the totalizers positively or negatively, and to take automatic sub-totals and totals at selected positions of the movablecarriage.

The carriage is automatically tabulated and returned, with an accompanying opening of the front-feed mechanism wherever desired, in either direction of carriage travel, whereby the ledger sheet and the customers statement may be withdrawn and replaced with another ledger sheet and another customers statement.

The machine is equipped with mechanism for selectively determining from which totalizer a total is to be taken, and with mechanism for overcoming a subtract condition set up by the carriage, so that an entry set up on the keyboard will be entered into the totalizers positively instead of negatively.

There are provided a number of selective controls for line-spacing the record materials vertically by means of the carriage opening and also by means of the mere operation of the machine. Manually-operated means is provided for causing the carriage to spacevertically upon a machine operation and, if further operated, to cause such vertical spacing to be accompanied by a return of the carriage to a preselected column.

Various controls are provided for rendering inoperative the normally automatic mechanism for tabulation, vertical paper feed, automatic taking of sub-totals and totals, and automatic carriage opening.

Means is provided for printing dates and folio or reference numbers without entering the amounts so set up into the totalizers. The printing mechanism is provided with controls which may be automatically or manualiy operated to prevent amounts that are set up on the differential mechanism from being printed, or may prevent such amounts from being printed in certain denominational orders.

The carriage has in its front-feed construction means for having it fully open, whereby record material is easily inserted from the front, and means for moving it from fully-opened position to half-opened position, where the front-fed record material may be alined to the desired printing position.

A vertical spacing control is provided, which suppresses the tabulating mechanism, so that the machine, instead of being conditioned for cross-tabulation, is conditioned for vertical listing of the record material, whereby the machine acts as an ordinary add-subtract listing machine.

Novel electric means is provided for opening the main motor circuit while the carriage is open.

Automatic disabling means for the automatic totaltaking and sub-total-taking means is provided, and certain novel features of carriage construction will be disclosed.

The novel construction provides symbol-printing mechanism under selectively-operable key control.

A full flexible keyboard of digit keys is provided to set up entry data.

In the preferred embodiment of the machine, the automatic mechanism controls are set so that the carriage is automatically tabulated from a starting position as the various entries are being made on the record material, after which the carriage is returned to starting postion, accompanied by carriage opening. After an explanation of the preferred embodiment, the various changes which may be made in the operation of the machine will be explained.

Therefore, it is an object of the invention to provide a fully-automatic printing-calculating machine, capable of recording debit and credit transactions and resulting new balances, all but the amount-setting-up functions being performed automatically.

It is another object of the invention to provide such a machine with a so-called full keyboard; that is to say, one in which there are provided a plurality of rows of amount keys, each of which contains the'digits from 1 to 9 of the decimal system, or the digits of any other numerical denominational order upon which the machine may be based.

It is another object of the invention to provide an improved front-feed carriage which is so constructed and so operated by the machine that, in addition to automatically tabulating to various printing columns under control of stops, it also automatically returns to iriitial position, and in addition it may be dominated by controls manually operable to overcome preset operating conditions.

The machine is constructed with novel mechanism for advancing the paper feed vertically by one or more lines under control of the machine operation With or without use of a vertical feed key, or under control of the carriage opening mechanism, or both.

A further object of the invention is to provide means by which the automatic mechanism may be disabled, so that the totals and sub-totals are not taken automatically but are taken under control of the operator by manual means.

It is a still further object of the invention to provide such a machine in which the automatic controls may be so disabled that it may be used as an add-subtract machine with vertical listing of the transactions.

Another object of the invention is to provide a manually-operable vertical feed control which overcomes the 

